vmparam.h revision 1.48 1 1.48 matt /* $NetBSD: vmparam.h,v 1.48 2011/02/20 07:45:47 matt Exp $ */
2 1.5 cgd
3 1.1 deraadt /*
4 1.47 rmind * Copyright (c) 1988 University of Utah.
5 1.2 glass * Copyright (c) 1992, 1993
6 1.2 glass * The Regents of the University of California. All rights reserved.
7 1.33 agc *
8 1.33 agc * This code is derived from software contributed to Berkeley by
9 1.33 agc * the Systems Programming Group of the University of Utah Computer
10 1.33 agc * Science Department and Ralph Campbell.
11 1.33 agc *
12 1.33 agc * Redistribution and use in source and binary forms, with or without
13 1.33 agc * modification, are permitted provided that the following conditions
14 1.33 agc * are met:
15 1.33 agc * 1. Redistributions of source code must retain the above copyright
16 1.33 agc * notice, this list of conditions and the following disclaimer.
17 1.33 agc * 2. Redistributions in binary form must reproduce the above copyright
18 1.33 agc * notice, this list of conditions and the following disclaimer in the
19 1.33 agc * documentation and/or other materials provided with the distribution.
20 1.33 agc * 3. Neither the name of the University nor the names of its contributors
21 1.33 agc * may be used to endorse or promote products derived from this software
22 1.33 agc * without specific prior written permission.
23 1.33 agc *
24 1.33 agc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 1.33 agc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 1.33 agc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 1.33 agc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 1.33 agc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 1.33 agc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 1.33 agc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 1.33 agc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 1.33 agc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 1.33 agc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 1.33 agc * SUCH DAMAGE.
35 1.33 agc *
36 1.33 agc * from: Utah Hdr: vmparam.h 1.16 91/01/18
37 1.33 agc *
38 1.33 agc * @(#)vmparam.h 8.2 (Berkeley) 4/22/94
39 1.33 agc */
40 1.1 deraadt
41 1.10 thorpej #ifndef _MIPS_VMPARAM_H_
42 1.10 thorpej #define _MIPS_VMPARAM_H_
43 1.10 thorpej
44 1.48 matt #ifdef _KERNEL_OPT
45 1.48 matt #include "opt_multiprocessor.h"
46 1.48 matt #endif
47 1.48 matt
48 1.1 deraadt /*
49 1.10 thorpej * Machine dependent VM constants for MIPS.
50 1.1 deraadt */
51 1.25 thorpej
52 1.25 thorpej /*
53 1.43 matt * We normally use a 4K page but may use 16K on MIPS systems.
54 1.43 matt * Override PAGE_* definitions to compile-time constants.
55 1.25 thorpej */
56 1.43 matt #ifdef ENABLE_MIPS_16KB_PAGE
57 1.43 matt #define PAGE_SHIFT 14
58 1.43 matt #elif defined(ENABLE_MIPS_4KB_PAGE) || 1
59 1.25 thorpej #define PAGE_SHIFT 12
60 1.43 matt #else
61 1.43 matt #error ENABLE_MIPS_xKB_PAGE not defined
62 1.43 matt #endif
63 1.25 thorpej #define PAGE_SIZE (1 << PAGE_SHIFT)
64 1.25 thorpej #define PAGE_MASK (PAGE_SIZE - 1)
65 1.10 thorpej
66 1.1 deraadt /*
67 1.31 thorpej * USRSTACK is the top (end) of the user stack.
68 1.21 soren *
69 1.21 soren * USRSTACK needs to start a little below 0x8000000 because the R8000
70 1.21 soren * and some QED CPUs perform some virtual address checks before the
71 1.48 matt * offset is calculated. We use 0x8000 since that's the max displacement
72 1.48 matt * in an instruction.
73 1.1 deraadt */
74 1.48 matt #define USRSTACK (VM_MAXUSER_ADDRESS-0x8000) /* Start of user stack */
75 1.48 matt #define USRSTACK32 ((uint32_t)VM_MAXUSER32_ADDRESS-0x8000)
76 1.26 tsutsui
77 1.26 tsutsui /* alignment requirement for u-area space in bytes */
78 1.26 tsutsui #define USPACE_ALIGN USPACE
79 1.1 deraadt
80 1.1 deraadt /*
81 1.1 deraadt * Virtual memory related constants, all in bytes
82 1.1 deraadt */
83 1.48 matt #if defined(__mips_o32)
84 1.1 deraadt #ifndef MAXTSIZ
85 1.29 simonb #define MAXTSIZ (64*1024*1024) /* max text size */
86 1.1 deraadt #endif
87 1.1 deraadt #ifndef DFLDSIZ
88 1.29 simonb #define DFLDSIZ (128*1024*1024) /* initial data size limit */
89 1.1 deraadt #endif
90 1.1 deraadt #ifndef MAXDSIZ
91 1.29 simonb #define MAXDSIZ (512*1024*1024) /* max data size */
92 1.1 deraadt #endif
93 1.1 deraadt #ifndef DFLSSIZ
94 1.44 matt #define DFLSSIZ (4*1024*1024) /* initial stack size limit */
95 1.1 deraadt #endif
96 1.1 deraadt #ifndef MAXSSIZ
97 1.6 jonathan #define MAXSSIZ (32*1024*1024) /* max stack size */
98 1.1 deraadt #endif
99 1.48 matt #else
100 1.48 matt /*
101 1.48 matt * 64-bit ABIs need more space.
102 1.48 matt */
103 1.48 matt #ifndef MAXTSIZ
104 1.48 matt #define MAXTSIZ (128*1024*1024) /* max text size */
105 1.48 matt #endif
106 1.48 matt #ifndef DFLDSIZ
107 1.48 matt #define DFLDSIZ (256*1024*1024) /* initial data size limit */
108 1.48 matt #endif
109 1.48 matt #ifndef MAXDSIZ
110 1.48 matt #define MAXDSIZ (1536*1024*1024) /* max data size */
111 1.48 matt #endif
112 1.48 matt #ifndef DFLSSIZ
113 1.48 matt #define DFLSSIZ (16*1024*1024) /* initial stack size limit */
114 1.48 matt #endif
115 1.48 matt #ifndef MAXSSIZ
116 1.48 matt #define MAXSSIZ (120*1024*1024) /* max stack size */
117 1.48 matt #endif
118 1.48 matt #endif /* !__mips_o32 */
119 1.1 deraadt
120 1.1 deraadt /*
121 1.44 matt * Virtual memory related constants, all in bytes
122 1.44 matt */
123 1.44 matt #ifndef MAXTSIZ32
124 1.44 matt #define MAXTSIZ32 MAXTSIZ /* max text size */
125 1.44 matt #endif
126 1.44 matt #ifndef DFLDSIZ32
127 1.44 matt #define DFLDSIZ32 DFLDSIZ /* initial data size limit */
128 1.44 matt #endif
129 1.44 matt #ifndef MAXDSIZ32
130 1.44 matt #define MAXDSIZ32 MAXDSIZ /* max data size */
131 1.44 matt #endif
132 1.44 matt #ifndef DFLSSIZ32
133 1.44 matt #define DFLSSIZ32 DFLTSIZ /* initial stack size limit */
134 1.44 matt #endif
135 1.44 matt #ifndef MAXSSIZ32
136 1.44 matt #define MAXSSIZ32 MAXSSIZ /* max stack size */
137 1.44 matt #endif
138 1.44 matt
139 1.44 matt /*
140 1.1 deraadt * PTEs for mapping user space into the kernel for phyio operations.
141 1.24 soda * The default PTE number is enough to cover 8 disks * MAXBSIZE.
142 1.1 deraadt */
143 1.1 deraadt #ifndef USRIOSIZE
144 1.32 thorpej #define USRIOSIZE (MAXBSIZE/PAGE_SIZE * 8)
145 1.1 deraadt #endif
146 1.1 deraadt
147 1.1 deraadt /*
148 1.1 deraadt * Mach derived constants
149 1.1 deraadt */
150 1.1 deraadt
151 1.44 matt /*
152 1.44 matt * user/kernel map constants
153 1.44 matt * These are negative addresses since MIPS addresses are signed.
154 1.44 matt */
155 1.11 nisimura #define VM_MIN_ADDRESS ((vaddr_t)0x00000000)
156 1.44 matt #ifdef _LP64
157 1.48 matt #define VM_MAXUSER_ADDRESS ((vaddr_t) 1L << (4*PGSHIFT-8))
158 1.48 matt /* 0x0000010000000000 */
159 1.44 matt #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
160 1.44 matt #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 3L << 62) /* 0xC000000000000000 */
161 1.44 matt #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) -1L << 31) /* 0xFFFFFFFF80000000 */
162 1.44 matt #else
163 1.44 matt #define VM_MAXUSER_ADDRESS ((vaddr_t)-0x7fffffff-1)/* 0xFFFFFFFF80000000 */
164 1.44 matt #define VM_MAX_ADDRESS ((vaddr_t)-0x7fffffff-1)/* 0xFFFFFFFF80000000 */
165 1.44 matt #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)-0x40000000) /* 0xFFFFFFFFC0000000 */
166 1.16 uch #ifdef ENABLE_MIPS_TX3900
167 1.44 matt #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-0x01000000) /* 0xFFFFFFFFFF000000 */
168 1.16 uch #else
169 1.44 matt #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-0x00004000) /* 0xFFFFFFFFFFFFC000 */
170 1.44 matt #endif
171 1.16 uch #endif
172 1.44 matt #define VM_MAXUSER32_ADDRESS ((vaddr_t)(1UL << 31))/* 0x0000000080000000 */
173 1.1 deraadt
174 1.34 simonb /*
175 1.34 simonb * The address to which unspecified mapping requests default
176 1.34 simonb */
177 1.37 simonb #define __USE_TOPDOWN_VM
178 1.34 simonb #define VM_DEFAULT_ADDRESS(da, sz) \
179 1.34 simonb trunc_page(USRSTACK - MAXSSIZ - (sz))
180 1.44 matt #define VM_DEFAULT_ADDRESS32(da, sz) \
181 1.44 matt trunc_page(USRSTACK32 - MAXSSIZ32 - (sz))
182 1.34 simonb
183 1.1 deraadt /* virtual sizes (bytes) for various kernel submaps */
184 1.32 thorpej #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
185 1.10 thorpej
186 1.10 thorpej /* VM_PHYSSEG_MAX defined by platform-dependent code. */
187 1.10 thorpej #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
188 1.48 matt #define VM_PHYSSEG_NOADD /* can add RAM after vm_mem_init */
189 1.27 thorpej
190 1.44 matt #ifndef VM_NFREELIST
191 1.44 matt #define VM_NFREELIST 16 /* 16 distinct memory segments */
192 1.44 matt #define VM_FREELIST_DEFAULT 0
193 1.48 matt #define VM_FREELIST_MAX 1
194 1.48 matt #endif
195 1.48 matt
196 1.48 matt #ifdef _KERNEL
197 1.48 matt #define UVM_KM_VMFREELIST mips_poolpage_vmfreelist
198 1.48 matt extern int mips_poolpage_vmfreelist;
199 1.44 matt #endif
200 1.44 matt
201 1.10 thorpej #endif /* ! _MIPS_VMPARAM_H_ */
202